Three 4,7-diaryl-2-ethylsulfanylpyrazolo[1,5-a][1,3,5] triazines

Henry Insuasty, Paola Mier, Gina Suarez, John N. Low, Justo Cobo, Christopher Glidewell

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The molecular dimensions of 2-ethylsulfanyl-7-(4-methylphenyl)4-phenylpyrazolo[1,5-a][1,3,5] triazine, C20H18N4S, (I), 7-(4-chlorophenyl)-2-ethylsulfanyl-4-phenylpyrazolo[1,5a][1,3,5] triazine, C19H15ClN4S, (II), and 4,7-bis(4-chlorophenyl)2-(ethylsulfanyl) pyrazolo[1,5-a][1,3,5] triazine, C19H14Cl2N4S, (III), show evidence for some aromatic delocalization in the pyrazole rings. The conformations adopted by the ethylsulfanyl substituents are different in all three compounds. There are no hydrogen bonds in any of the crystal structures, but pairs of molecules in (II) and (III) are linked into centrosymmetric dimers by pi-stacking interactions.

Original languageEnglish
Number of pages4
JournalActa Crystallographica Section C-Crystal Structure Communications
Publication statusPublished - Jan 2008


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